G&O Maritime Group

We are a group of sub system providers to the maritime industry, all developing high quality products and enabling our customers through the green transition in the maritime industry

Our brands are part of three divisions

Propulsion management

Offers vibration compensators, cylinder lubrication systems and piston rod stuffing boxes. We cooperate with engine manufacturers and shipping companies to optimise main engine operations and support the important task of utilising new environmentally friendly fuel types.


Water & Waste management

Includes incineration plants and biological water purifying plants, securing that waste water is purified before discharge while solid waste and oil sludge is incinerated at high temperatures to reduce SOx and NOx emissions.


Tank management

Provides PV valves and protects tank vessels against unintended overpressure or vacuum while simultaneously protecting against fire risk and ensuring that emissions from the cargo is kept to a minimum in accordance with IMO standards.

One group, six leading brands

Division: Water & Waste management

Incineration of waste and oil sludge, eliminating the need for discharging to shore while reducing emissions from incineration.

Division: Water & Waste management

Biologically cleaning of grey and black waste water before it is discharged.

Division: Propulsion management

Compensators that eliminate vibrations at the source, reducing cost, improving comfort, and cutting fuel spend.

Division: Propulsion management

Leading global provider of cylinder lubrication systems for two-stroke marine engines.

Division: Propulsion management

Piston rod stuffing boxes for two-stroke engines continuously improved to live up to new fuel types entering the market.

Division: Tank management

Valves and venting equipment reducing emissions from cargo while keeping vessels, equipment and crews safe every day.

Our vision is to make vessels a greener and safer place to work

We are here for our customers through times of change

The maritime industry is undergoing a green transition in which new technologies and fuel types are of paramount importance.

In G&O Maritime Group, we want to offer value to our customers through our deep technical expertise, through R&D and by understanding our customers’ needs. Our ambition is to stand out as one of the strongest suppliers in the industry, enabling our customers during this important market change.

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Latest news in G&O Maritime Group

  • Keep your two-stroke marine engine running efficiently

    Keep your two-stroke marine engine running efficiently

    The maritime industry relies heavily on two-stroke marine engines to power the vessels. These engines are highly efficient. However, they require proper lubrication to function at their best. Lubrication is an essential component of any engine, and it is especially critical for two-stroke marine engines. The right lubricant and lubrication system help to reduce friction, […]

  • Minimizing lubrication feed rate: 3 reasons why less is more

    Minimizing lubrication feed rate: 3 reasons why less is more

    In the world of marine vessels, flexible cylinder lubrication is essential for ensuring the longevity and efficiency of the engine. However, excessive lubrication can lead to a range of problems, subsequently increasing maintenance costs, lower  performance, and environmental concerns. That’s why it’s important to pay attention to lubrication feed rate, and take steps to minimize […]

  • Improve cylinder condition through effective lubrication

    Improve cylinder condition through effective lubrication

    Cylinder condition is a critical factor that affects the performance and longevity of marine engines. Proper lubrication is essential to ensure optimal cylinder condition and prevent wear and damage. In this blog post, you can learn more about the importance of cylinder condition monitoring and how much cylinder wear is acceptable. Cylinder condition monitoring Cylinder […]

  • Reduce lube oil consumption and emissions

    Reduce lube oil consumption and emissions

    Marine vessels rely on lubricating oil to keep their engines running smoothly and efficiently. However, excessive lube oil consumption can lead to increased costs, decreased efficiency, and higher emissions. At Hans Jensen Lubricators, we understand the fine balance between reducing lube oil consumption while maintaining optimal engine performance. By reducing emissions and lube oil consumption, […]